This product is not a natural mineral, but a mixed crystal of mercuric chloride and mercurous chloride (HgCl₂+HgCl) produced by the sublimation method. It is a mass formed by the aggregation of needle-like crystals, white or slightly yellow, opaque, with a spicy taste and a persistent metallic flavor. The powder consists of white needle-like crystals. It is heavy and fragile. The best quality is characterized by its white color, strip-like form, luster, and long storage time.

bubble_chart Properties and Meridians

Acrid, extremely toxic.

bubble_chart Efficacy

Sterilization, anti-inflammatory, pus drainage, and necrotic tissue removal.

bubble_chart Indications

Yongju, back gangrene, boils, and sores.

bubble_chart Usage and Dosage

For external use only. Apply 0.09 to 0.15g of powder to the affected area. Avoid excessive use on newborns, the face, and joint areas. Do not use in the mouth, ears, around the eyes, or on the heart and waist areas.

bubble_chart Processing and Storage

For toxicity and antidote methods, see calomel.